Nft/marketplace

assignments/6-wallet-address/README.md

@@ -0,0 +1,78 @@
+
+# BIP32 Wallet
+
+A simple, lightweight utility for deriving Ethereum wallets from BIP39 mnemonics using hierarchical deterministic (HD) wallets.
+
+## What is this?
+
+This is a straightforward Node.js module that helps you work with Ethereum wallets. It lets you generate mnemonic phrases and derive multiple wallet addresses from a single seed phrase—useful if you want to manage several wallets without storing separate private keys.
+
+## Features
+
+- **Generate BIP39 mnemonics** - Create secure seed phrases
+- **Derive Ethereum wallets** - Get address and private key from a mnemonic
+- **Batch derivation** - Generate multiple wallets from a single phrase
+- **HD wallet support** - Uses standard Ethereum derivation paths (BIP44)
+
+## Installation
+
+First, make sure you have Node.js installed. Then grab the dependencies:
+
+```bash
+npm install
+```
+
+## Usage
+
+Here's how to get started:
+
+```javascript
+const { deriveWallet, generateMnemonic, deriveMultiple } = require('./bip32wallet');
+
+// Create a new random mnemonic
+const mnemonic = generateMnemonic();
+console.log(mnemonic); // 12 or 24 word seed phrase
+
+// Derive a wallet from it
+const wallet = deriveWallet(mnemonic);
+console.log(wallet.address);    // Your wallet address
+console.log(wallet.privateKey); // Your private key
+
+// Or generate multiple wallets at once
+const wallets = deriveMultiple(mnemonic, 5); // Creates 5 wallets
+wallets.forEach((w, i) => {
+  console.log(`Wallet ${i + 1}: ${w.address}`);
+});
+```
+
+## API
+
+### `generateMnemonic(strength)`
+Generates a random BIP39 mnemonic phrase.
+- **strength** (optional): Number of bits (default: 128 = 12 words, 256 = 24 words)
+- **Returns**: A string mnemonic phrase
+
+### `deriveWallet(mnemonic, path)`
+Derives a single wallet from a mnemonic.
+- **mnemonic**: Your seed phrase
+- **path** (optional): HD derivation path (default: `m/44'/60'/0'/0/0`)
+- **Returns**: Object with `address`, `publicKey`, and `privateKey`
+
+### `deriveMultiple(mnemonic, count, basePath)`
+Generate multiple wallets from a single mnemonic.
+- **mnemonic**: Your seed phrase
+- **count** (optional): How many wallets to create (default: 5)
+- **basePath** (optional): Base derivation path (default: `m/44'/60'/0'/0`)
+- **Returns**: Array of wallet objects
+
+## Requirements
+
+- Node.js (v12 or higher)
+- `bip39` - BIP39 mnemonic utilities
+- `ethers` - Ethereum library for wallet operations
+
+## Security Note
+
+Never share your private keys or mnemonic phrases! This code is meant for development and testing. For production use, consider using hardware wallets or proper key management systems.
+
+